particle

4

Sable cinétique - bonus jonglage

Preview of interactive project by Adrien M / Claire B is a flat 4K screen displaying particle attractor physics when balls are placed on it:

We are working on XYZT upgrade in Abbaye de Noirlac. The new Cinetic Sand now works with my juggling balls! The final version will be presented at the Palais de la Découverte in Paris on june 8th. Thanks to Jeremy Chartier for the music.

Ecran 4K, 32 touches simultanées…

Link

4

A major update for the Wind Waker smoke stuff is out! Lots of major changes have been made to make the effects function a bit better. A few new effects have been added, such as the smoke from a bubble. And made a bunch of minor tweaks.

The main feature here is that all the old materials have been sorted out name wise and the sprites themselves have been replaced with those used in Hypatia’s High Res Wind Waker Texture Pack!

All the sprites are all now 512x512, which is a huge leap from the previous 128x128 of the original game. I’ve also rebuilt the sprites to make the outline as nice and clean as I possibly could, now everything should look as much like the actual game as it possibly can!

Download the effects here!

Download the extra materials here!

Particle Collisions Could Create Twin Black Holes at Large Hadron Collider

Back in 2008, physicists repeatedly assured us that a black hole produced by the Large Hadron Collider (LHC) was not going to swallow Earth. But that doesn’t mean they weren’t hoping to make one. Collisions between high energy particles, like the LHC’s protons, could theoretically squeeze enough mass and energy into a small enough space to create a tiny black hole—and making one might be a bit easier than physicists believed. It takes 2.4 times less energy than previously thought to create a black hole from a particle collision, according to a new paper in Physical Review Letters. That’s because when two particles smash into each other, their gravitational pull traps energy at two points on either side of the crash site. If enough energy gets concentrated at those points, it collapses into twin black holes that quickly gobble each other up and merge into one, as seen in the simulation above. Even with the new energy estimates, the chances of making a black hole in a particle accelerator are still vanishingly small. But because spotting one at the relatively low energy of the LHC would be solid experimental evidence for extra dimensions, physicists are keeping their fingers crossed.

Via sciencemag.org

Atom Smasher Creates New Kind of Matter

Collisions between particles inside the Large Hadron Collider atom smasher have created what looks like a new form of matter.

Image: A proton collides with a lead nucleus, sending a shower of particles through the CMS detector. Credit: CERN

The new kind of matter is called color-glass condensate, and is a liquidlike wave of gluons, which are elementary particles related to the strong force that sticks quarks together inside protons and neutrons (hence they are like “glue”).

Scientists didn’t expect this kind of matter wouldresult from the typeof particle collisions going on at the Large Hadron Collider at the time. However, it may explain some odd behavior seen inside the machine, which is a giant loop where particles race around underneath Switzerland and France.

When scientists sped up protons (one of the building blocks of atoms) and lead ions (lead atoms, which contain 82 protons each, stripped of their electrons), and crashed them into each other, the resulting explosions liquefied those particles and gave rise to new particles in their wake. Most of these new particles, as expected, fly off in all directions at close to the speed of light.

But recently scientists noticed that some pairs of particles were flying off from the collision point in correlated directions.

“Somehow they fly at the same direction even though it’s not clear how they can communicate their direction with one another. That has surprised many people, including us,” MIT physicistGunther Roland, whose group led the analysis of the collision data along with Wei Liof Rice University, said in a statement.

Continue..

4

JG (v2)

Graphics demo by Arthur Rakhteenko features interactive 3D scene which is rendered using Impressionist painterly strokes as particles (in the video below, the effect appears three minutes into it):

The “painted” effect wasn’t planned. Originally I only had an idea to render a natural scenery of a certain kind, and I wasn’t ready to spend a whole lot of time on it. It became clear to me, a “realistic” approach won’t work, resulting in either very mediocre visuals (due to engine limitations and the complexity of real-time vegetation modeling), or a whole year of trying to catch up with Crysis. So it wasn’t the way.

What I really wanted is to preserve the atmosphere, the feeling, avoiding ruining it with technical limitations.

A demo for PC can be downloaded here

More background on how this was technically done can be found here

[H/T: @fluate]

Illustration of Wave Particle Duality.

Wave Particle Duality is one of the most astounding discoveries ever made. Light behaves as a Wave when it is not observed but behaves as a Particle when observed. We all Vibrate through the Structure of Space-Time and we make Waves just like Photons. So are we Particles or Waves? We are Both. Observation Creates your Reality. Math and Art blended as one and the same, Pure Geometry.

Antarctic neutrino observatory detects unexplained high-energy particles | Nature

Hot on the heels of detecting the two highest-energy neutrinos ever observed, scientists working with a mammoth particle detector buried in ice near the South Pole unveiled preliminary data showing that they also registered the signal of 26 additional high-energy neutrinos. The newfound neutrinos are somewhat less energetic than the two record-setters but nonetheless appear to carry more energy than would be expected if created by cosmic rays hitting the atmosphere—a prodigious source of neutrinos raining down on Earth. The particles thus may point to unknown energetic astrophysical processes deeper in the cosmos.

“The result right now is very preliminary,” cautions Nathan Whitehorn of the University of Wisconsin–Madison, who described the new data May 15 during a symposium in Madison on particle astrophysics. “We’re not totally certain right now that it’s from an astrophysical source.” But it is difficult to explain the number and energy of the detected particles by invoking known processes within the solar system. “If this does in fact hold up with more data, and this does turn out to be an astrophysical source, then we’ll be able to address some questions in ways that were totally inaccessible before,” Whitehorn adds.

[Read more]

4

Wanderment

Short indie game by Andrew Wang where you play a blind kitten navigating an envirnoment presented as particles based on your actions (a sort of kitty-sonar). Here is a video review by ToriDori:

Enjoy the adventures of a playful blind kitten journeying across town to find its friend. Particle-based 3D platformer. Sense your surroundings by splashing and walking. Take your time, savor and enjoy the experience.

Made in 72 hours for #CloneJamJord.

You can find out more (and download the game) here

Amplituhedron

- the shape that does not exist in space-time

Physicists reported this week (dec 2013 n.r.) the discovery of a jewel-like geometric object that dramatically simplifies calculations of particle interactions and challenges the notion that space and time are fundamental components of reality.

The revelation that particle interactions, the most basic events in nature, may be consequences of geometry significantly advances a decades-long effort to reformulate quantum field theory, the body of laws describing elementary particles and their interactions. Interactions that were previously calculated with mathematical formulas thousands of terms long can now be described by computing the volume of the corresponding jewel-like “amplituhedron,” which yields an equivalent one-term expression.


More on:

Wired and Discover Magazine

Illustration by Andy Gilmore/www.breedlondon.com

Physicists Shed Light on Possible “Fifth Force of Nature”

In a breakthrough for the field of particle physics, Prof. Larry Hunter and colleagues at Amherst and The Univ. of Texas at Austin have established new limits on what scientists call “long-range spin-spin interactions” between atomic particles. These interactions have been proposed by theoretical physicists but have not yet been seen. Their observation would constitute the discovery of a “fifth force of nature” (in addition to the four known fundamental forces: gravity, weak, strong and electromagnetic) and would suggest the existence of new particles, beyond those presently described by the Standard Model of particle physics.

Read more: http://www.laboratoryequipment.com/news/2013/02/physicists-shed-light-possible-fifth-force-nature

5

The mass of quantum particles is fundamentally unknowable

“This is because there’s that same inherent tension-and-uncertainty between energy and time as there is between position and momentum! So if you have a very small uncertainty in the timescale of a particular system, there must inherently be a very large energy uncertainty.

Think about this in terms of a particle’s lifetime, now. If a particle stably (or quasi-stably) exists for a very long period of time, its energy uncertainty can be very small. But what of an inherently short-lived, very unstable particle? Its energy uncertainty must be huge to compensate; Heisenberg demands it.

And now for the kicker: if there’s a large uncertainty in a particle’s inherent energy, and we know that there’s an energy-mass equivalence via E = mc^2, then the shorter a particle’s lifetime is, the less well-known its mass can be, even in principle!”

Just when you thought quantum mechanics couldn’t get any weirder: turns out that the mass of any individual particle is fundamentally UNKNOWABLE. Thanks a lot, Universe.